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[thirdparty/systemd.git] / src / tmpfiles / tmpfiles.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering, Kay Sievers
7 Copyright 2015 Zbigniew Jędrzejewski-Szmek
8
9 systemd is free software; you can redistribute it and/or modify it
10 under the terms of the GNU Lesser General Public License as published by
11 the Free Software Foundation; either version 2.1 of the License, or
12 (at your option) any later version.
13
14 systemd is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
18
19 You should have received a copy of the GNU Lesser General Public License
20 along with systemd; If not, see <http://www.gnu.org/licenses/>.
21 ***/
22
23 #include <dirent.h>
24 #include <errno.h>
25 #include <fcntl.h>
26 #include <fnmatch.h>
27 #include <getopt.h>
28 #include <glob.h>
29 #include <limits.h>
30 #include <linux/fs.h>
31 #include <stdbool.h>
32 #include <stddef.h>
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <sys/stat.h>
37 #include <sys/xattr.h>
38 #include <time.h>
39 #include <unistd.h>
40
41 #include "acl-util.h"
42 #include "btrfs-util.h"
43 #include "capability.h"
44 #include "chattr-util.h"
45 #include "conf-files.h"
46 #include "copy.h"
47 #include "escape.h"
48 #include "fd-util.h"
49 #include "fileio.h"
50 #include "formats-util.h"
51 #include "fs-util.h"
52 #include "io-util.h"
53 #include "label.h"
54 #include "log.h"
55 #include "macro.h"
56 #include "missing.h"
57 #include "mkdir.h"
58 #include "parse-util.h"
59 #include "path-util.h"
60 #include "rm-rf.h"
61 #include "selinux-util.h"
62 #include "set.h"
63 #include "specifier.h"
64 #include "string-util.h"
65 #include "strv.h"
66 #include "user-util.h"
67 #include "util.h"
68
69 /* This reads all files listed in /etc/tmpfiles.d/?*.conf and creates
70 * them in the file system. This is intended to be used to create
71 * properly owned directories beneath /tmp, /var/tmp, /run, which are
72 * volatile and hence need to be recreated on bootup. */
73
74 typedef enum ItemType {
75 /* These ones take file names */
76 CREATE_FILE = 'f',
77 TRUNCATE_FILE = 'F',
78 CREATE_DIRECTORY = 'd',
79 TRUNCATE_DIRECTORY = 'D',
80 CREATE_SUBVOLUME = 'v',
81 CREATE_SUBVOLUME_INHERIT_QUOTA = 'q',
82 CREATE_SUBVOLUME_NEW_QUOTA = 'Q',
83 CREATE_FIFO = 'p',
84 CREATE_SYMLINK = 'L',
85 CREATE_CHAR_DEVICE = 'c',
86 CREATE_BLOCK_DEVICE = 'b',
87 COPY_FILES = 'C',
88
89 /* These ones take globs */
90 WRITE_FILE = 'w',
91 SET_XATTR = 't',
92 RECURSIVE_SET_XATTR = 'T',
93 SET_ACL = 'a',
94 RECURSIVE_SET_ACL = 'A',
95 SET_ATTRIBUTE = 'h',
96 RECURSIVE_SET_ATTRIBUTE = 'H',
97 IGNORE_PATH = 'x',
98 IGNORE_DIRECTORY_PATH = 'X',
99 REMOVE_PATH = 'r',
100 RECURSIVE_REMOVE_PATH = 'R',
101 RELABEL_PATH = 'z',
102 RECURSIVE_RELABEL_PATH = 'Z',
103 ADJUST_MODE = 'm', /* legacy, 'z' is identical to this */
104 } ItemType;
105
106 typedef struct Item {
107 ItemType type;
108
109 char *path;
110 char *argument;
111 char **xattrs;
112 #ifdef HAVE_ACL
113 acl_t acl_access;
114 acl_t acl_default;
115 #endif
116 uid_t uid;
117 gid_t gid;
118 mode_t mode;
119 usec_t age;
120
121 dev_t major_minor;
122 unsigned attribute_value;
123 unsigned attribute_mask;
124
125 bool uid_set:1;
126 bool gid_set:1;
127 bool mode_set:1;
128 bool age_set:1;
129 bool mask_perms:1;
130 bool attribute_set:1;
131
132 bool keep_first_level:1;
133
134 bool force:1;
135
136 bool done:1;
137 } Item;
138
139 typedef struct ItemArray {
140 Item *items;
141 size_t count;
142 size_t size;
143 } ItemArray;
144
145 static bool arg_create = false;
146 static bool arg_clean = false;
147 static bool arg_remove = false;
148 static bool arg_boot = false;
149
150 static char **arg_include_prefixes = NULL;
151 static char **arg_exclude_prefixes = NULL;
152 static char *arg_root = NULL;
153
154 static const char conf_file_dirs[] = CONF_DIRS_NULSTR("tmpfiles");
155
156 #define MAX_DEPTH 256
157
158 static OrderedHashmap *items = NULL, *globs = NULL;
159 static Set *unix_sockets = NULL;
160
161 static const Specifier specifier_table[] = {
162 { 'm', specifier_machine_id, NULL },
163 { 'b', specifier_boot_id, NULL },
164 { 'H', specifier_host_name, NULL },
165 { 'v', specifier_kernel_release, NULL },
166 {}
167 };
168
169 static bool needs_glob(ItemType t) {
170 return IN_SET(t,
171 WRITE_FILE,
172 IGNORE_PATH,
173 IGNORE_DIRECTORY_PATH,
174 REMOVE_PATH,
175 RECURSIVE_REMOVE_PATH,
176 ADJUST_MODE,
177 RELABEL_PATH,
178 RECURSIVE_RELABEL_PATH,
179 SET_XATTR,
180 RECURSIVE_SET_XATTR,
181 SET_ACL,
182 RECURSIVE_SET_ACL,
183 SET_ATTRIBUTE,
184 RECURSIVE_SET_ATTRIBUTE);
185 }
186
187 static bool takes_ownership(ItemType t) {
188 return IN_SET(t,
189 CREATE_FILE,
190 TRUNCATE_FILE,
191 CREATE_DIRECTORY,
192 TRUNCATE_DIRECTORY,
193 CREATE_SUBVOLUME,
194 CREATE_SUBVOLUME_INHERIT_QUOTA,
195 CREATE_SUBVOLUME_NEW_QUOTA,
196 CREATE_FIFO,
197 CREATE_SYMLINK,
198 CREATE_CHAR_DEVICE,
199 CREATE_BLOCK_DEVICE,
200 COPY_FILES,
201 WRITE_FILE,
202 IGNORE_PATH,
203 IGNORE_DIRECTORY_PATH,
204 REMOVE_PATH,
205 RECURSIVE_REMOVE_PATH);
206 }
207
208 static struct Item* find_glob(OrderedHashmap *h, const char *match) {
209 ItemArray *j;
210 Iterator i;
211
212 ORDERED_HASHMAP_FOREACH(j, h, i) {
213 unsigned n;
214
215 for (n = 0; n < j->count; n++) {
216 Item *item = j->items + n;
217
218 if (fnmatch(item->path, match, FNM_PATHNAME|FNM_PERIOD) == 0)
219 return item;
220 }
221 }
222
223 return NULL;
224 }
225
226 static void load_unix_sockets(void) {
227 _cleanup_fclose_ FILE *f = NULL;
228 char line[LINE_MAX];
229
230 if (unix_sockets)
231 return;
232
233 /* We maintain a cache of the sockets we found in
234 * /proc/net/unix to speed things up a little. */
235
236 unix_sockets = set_new(&string_hash_ops);
237 if (!unix_sockets)
238 return;
239
240 f = fopen("/proc/net/unix", "re");
241 if (!f)
242 return;
243
244 /* Skip header */
245 if (!fgets(line, sizeof(line), f))
246 goto fail;
247
248 for (;;) {
249 char *p, *s;
250 int k;
251
252 if (!fgets(line, sizeof(line), f))
253 break;
254
255 truncate_nl(line);
256
257 p = strchr(line, ':');
258 if (!p)
259 continue;
260
261 if (strlen(p) < 37)
262 continue;
263
264 p += 37;
265 p += strspn(p, WHITESPACE);
266 p += strcspn(p, WHITESPACE); /* skip one more word */
267 p += strspn(p, WHITESPACE);
268
269 if (*p != '/')
270 continue;
271
272 s = strdup(p);
273 if (!s)
274 goto fail;
275
276 path_kill_slashes(s);
277
278 k = set_consume(unix_sockets, s);
279 if (k < 0 && k != -EEXIST)
280 goto fail;
281 }
282
283 return;
284
285 fail:
286 set_free_free(unix_sockets);
287 unix_sockets = NULL;
288 }
289
290 static bool unix_socket_alive(const char *fn) {
291 assert(fn);
292
293 load_unix_sockets();
294
295 if (unix_sockets)
296 return !!set_get(unix_sockets, (char*) fn);
297
298 /* We don't know, so assume yes */
299 return true;
300 }
301
302 static int dir_is_mount_point(DIR *d, const char *subdir) {
303
304 union file_handle_union h = FILE_HANDLE_INIT;
305 int mount_id_parent, mount_id;
306 int r_p, r;
307
308 r_p = name_to_handle_at(dirfd(d), ".", &h.handle, &mount_id_parent, 0);
309 if (r_p < 0)
310 r_p = -errno;
311
312 h.handle.handle_bytes = MAX_HANDLE_SZ;
313 r = name_to_handle_at(dirfd(d), subdir, &h.handle, &mount_id, 0);
314 if (r < 0)
315 r = -errno;
316
317 /* got no handle; make no assumptions, return error */
318 if (r_p < 0 && r < 0)
319 return r_p;
320
321 /* got both handles; if they differ, it is a mount point */
322 if (r_p >= 0 && r >= 0)
323 return mount_id_parent != mount_id;
324
325 /* got only one handle; assume different mount points if one
326 * of both queries was not supported by the filesystem */
327 if (r_p == -ENOSYS || r_p == -EOPNOTSUPP || r == -ENOSYS || r == -EOPNOTSUPP)
328 return true;
329
330 /* return error */
331 if (r_p < 0)
332 return r_p;
333 return r;
334 }
335
336 static DIR* xopendirat_nomod(int dirfd, const char *path) {
337 DIR *dir;
338
339 dir = xopendirat(dirfd, path, O_NOFOLLOW|O_NOATIME);
340 if (dir)
341 return dir;
342
343 log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path);
344 if (errno != EPERM)
345 return NULL;
346
347 dir = xopendirat(dirfd, path, O_NOFOLLOW);
348 if (!dir)
349 log_debug_errno(errno, "Cannot open %sdirectory \"%s\": %m", dirfd == AT_FDCWD ? "" : "sub", path);
350
351 return dir;
352 }
353
354 static DIR* opendir_nomod(const char *path) {
355 return xopendirat_nomod(AT_FDCWD, path);
356 }
357
358 static int dir_cleanup(
359 Item *i,
360 const char *p,
361 DIR *d,
362 const struct stat *ds,
363 usec_t cutoff,
364 dev_t rootdev,
365 bool mountpoint,
366 int maxdepth,
367 bool keep_this_level) {
368
369 struct dirent *dent;
370 struct timespec times[2];
371 bool deleted = false;
372 int r = 0;
373
374 while ((dent = readdir(d))) {
375 struct stat s;
376 usec_t age;
377 _cleanup_free_ char *sub_path = NULL;
378
379 if (STR_IN_SET(dent->d_name, ".", ".."))
380 continue;
381
382 if (fstatat(dirfd(d), dent->d_name, &s, AT_SYMLINK_NOFOLLOW) < 0) {
383 if (errno == ENOENT)
384 continue;
385
386 /* FUSE, NFS mounts, SELinux might return EACCES */
387 if (errno == EACCES)
388 log_debug_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name);
389 else
390 log_error_errno(errno, "stat(%s/%s) failed: %m", p, dent->d_name);
391 r = -errno;
392 continue;
393 }
394
395 /* Stay on the same filesystem */
396 if (s.st_dev != rootdev) {
397 log_debug("Ignoring \"%s/%s\": different filesystem.", p, dent->d_name);
398 continue;
399 }
400
401 /* Try to detect bind mounts of the same filesystem instance; they
402 * do not differ in device major/minors. This type of query is not
403 * supported on all kernels or filesystem types though. */
404 if (S_ISDIR(s.st_mode) && dir_is_mount_point(d, dent->d_name) > 0) {
405 log_debug("Ignoring \"%s/%s\": different mount of the same filesystem.",
406 p, dent->d_name);
407 continue;
408 }
409
410 /* Do not delete read-only files owned by root */
411 if (s.st_uid == 0 && !(s.st_mode & S_IWUSR)) {
412 log_debug("Ignoring \"%s/%s\": read-only and owner by root.", p, dent->d_name);
413 continue;
414 }
415
416 sub_path = strjoin(p, "/", dent->d_name, NULL);
417 if (!sub_path) {
418 r = log_oom();
419 goto finish;
420 }
421
422 /* Is there an item configured for this path? */
423 if (ordered_hashmap_get(items, sub_path)) {
424 log_debug("Ignoring \"%s\": a separate entry exists.", sub_path);
425 continue;
426 }
427
428 if (find_glob(globs, sub_path)) {
429 log_debug("Ignoring \"%s\": a separate glob exists.", sub_path);
430 continue;
431 }
432
433 if (S_ISDIR(s.st_mode)) {
434
435 if (mountpoint &&
436 streq(dent->d_name, "lost+found") &&
437 s.st_uid == 0) {
438 log_debug("Ignoring \"%s\".", sub_path);
439 continue;
440 }
441
442 if (maxdepth <= 0)
443 log_warning("Reached max depth on \"%s\".", sub_path);
444 else {
445 _cleanup_closedir_ DIR *sub_dir;
446 int q;
447
448 sub_dir = xopendirat_nomod(dirfd(d), dent->d_name);
449 if (!sub_dir) {
450 if (errno != ENOENT)
451 r = log_error_errno(errno, "opendir(%s) failed: %m", sub_path);
452
453 continue;
454 }
455
456 q = dir_cleanup(i, sub_path, sub_dir, &s, cutoff, rootdev, false, maxdepth-1, false);
457 if (q < 0)
458 r = q;
459 }
460
461 /* Note: if you are wondering why we don't
462 * support the sticky bit for excluding
463 * directories from cleaning like we do it for
464 * other file system objects: well, the sticky
465 * bit already has a meaning for directories,
466 * so we don't want to overload that. */
467
468 if (keep_this_level) {
469 log_debug("Keeping \"%s\".", sub_path);
470 continue;
471 }
472
473 /* Ignore ctime, we change it when deleting */
474 age = timespec_load(&s.st_mtim);
475 if (age >= cutoff) {
476 char a[FORMAT_TIMESTAMP_MAX];
477 /* Follows spelling in stat(1). */
478 log_debug("Directory \"%s\": modify time %s is too new.",
479 sub_path,
480 format_timestamp_us(a, sizeof(a), age));
481 continue;
482 }
483
484 age = timespec_load(&s.st_atim);
485 if (age >= cutoff) {
486 char a[FORMAT_TIMESTAMP_MAX];
487 log_debug("Directory \"%s\": access time %s is too new.",
488 sub_path,
489 format_timestamp_us(a, sizeof(a), age));
490 continue;
491 }
492
493 log_debug("Removing directory \"%s\".", sub_path);
494 if (unlinkat(dirfd(d), dent->d_name, AT_REMOVEDIR) < 0)
495 if (errno != ENOENT && errno != ENOTEMPTY) {
496 log_error_errno(errno, "rmdir(%s): %m", sub_path);
497 r = -errno;
498 }
499
500 } else {
501 /* Skip files for which the sticky bit is
502 * set. These are semantics we define, and are
503 * unknown elsewhere. See XDG_RUNTIME_DIR
504 * specification for details. */
505 if (s.st_mode & S_ISVTX) {
506 log_debug("Skipping \"%s\": sticky bit set.", sub_path);
507 continue;
508 }
509
510 if (mountpoint && S_ISREG(s.st_mode))
511 if (s.st_uid == 0 && STR_IN_SET(dent->d_name,
512 ".journal",
513 "aquota.user",
514 "aquota.group")) {
515 log_debug("Skipping \"%s\".", sub_path);
516 continue;
517 }
518
519 /* Ignore sockets that are listed in /proc/net/unix */
520 if (S_ISSOCK(s.st_mode) && unix_socket_alive(sub_path)) {
521 log_debug("Skipping \"%s\": live socket.", sub_path);
522 continue;
523 }
524
525 /* Ignore device nodes */
526 if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) {
527 log_debug("Skipping \"%s\": a device.", sub_path);
528 continue;
529 }
530
531 /* Keep files on this level around if this is
532 * requested */
533 if (keep_this_level) {
534 log_debug("Keeping \"%s\".", sub_path);
535 continue;
536 }
537
538 age = timespec_load(&s.st_mtim);
539 if (age >= cutoff) {
540 char a[FORMAT_TIMESTAMP_MAX];
541 /* Follows spelling in stat(1). */
542 log_debug("File \"%s\": modify time %s is too new.",
543 sub_path,
544 format_timestamp_us(a, sizeof(a), age));
545 continue;
546 }
547
548 age = timespec_load(&s.st_atim);
549 if (age >= cutoff) {
550 char a[FORMAT_TIMESTAMP_MAX];
551 log_debug("File \"%s\": access time %s is too new.",
552 sub_path,
553 format_timestamp_us(a, sizeof(a), age));
554 continue;
555 }
556
557 age = timespec_load(&s.st_ctim);
558 if (age >= cutoff) {
559 char a[FORMAT_TIMESTAMP_MAX];
560 log_debug("File \"%s\": change time %s is too new.",
561 sub_path,
562 format_timestamp_us(a, sizeof(a), age));
563 continue;
564 }
565
566 log_debug("unlink \"%s\"", sub_path);
567
568 if (unlinkat(dirfd(d), dent->d_name, 0) < 0)
569 if (errno != ENOENT)
570 r = log_error_errno(errno, "unlink(%s): %m", sub_path);
571
572 deleted = true;
573 }
574 }
575
576 finish:
577 if (deleted) {
578 usec_t age1, age2;
579 char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX];
580
581 /* Restore original directory timestamps */
582 times[0] = ds->st_atim;
583 times[1] = ds->st_mtim;
584
585 age1 = timespec_load(&ds->st_atim);
586 age2 = timespec_load(&ds->st_mtim);
587 log_debug("Restoring access and modification time on \"%s\": %s, %s",
588 p,
589 format_timestamp_us(a, sizeof(a), age1),
590 format_timestamp_us(b, sizeof(b), age2));
591 if (futimens(dirfd(d), times) < 0)
592 log_error_errno(errno, "utimensat(%s): %m", p);
593 }
594
595 return r;
596 }
597
598 static int path_set_perms(Item *i, const char *path) {
599 _cleanup_close_ int fd = -1;
600 struct stat st;
601
602 assert(i);
603 assert(path);
604
605 /* We open the file with O_PATH here, to make the operation
606 * somewhat atomic. Also there's unfortunately no fchmodat()
607 * with AT_SYMLINK_NOFOLLOW, hence we emulate it here via
608 * O_PATH. */
609
610 fd = open(path, O_RDONLY|O_NOFOLLOW|O_CLOEXEC|O_PATH|O_NOATIME);
611 if (fd < 0)
612 return log_error_errno(errno, "Adjusting owner and mode for %s failed: %m", path);
613
614 if (fstatat(fd, "", &st, AT_EMPTY_PATH) < 0)
615 return log_error_errno(errno, "Failed to fstat() file %s: %m", path);
616
617 if (S_ISLNK(st.st_mode))
618 log_debug("Skipping mode an owner fix for symlink %s.", path);
619 else {
620 char fn[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
621 xsprintf(fn, "/proc/self/fd/%i", fd);
622
623 /* not using i->path directly because it may be a glob */
624 if (i->mode_set) {
625 mode_t m = i->mode;
626
627 if (i->mask_perms) {
628 if (!(st.st_mode & 0111))
629 m &= ~0111;
630 if (!(st.st_mode & 0222))
631 m &= ~0222;
632 if (!(st.st_mode & 0444))
633 m &= ~0444;
634 if (!S_ISDIR(st.st_mode))
635 m &= ~07000; /* remove sticky/sgid/suid bit, unless directory */
636 }
637
638 if (m == (st.st_mode & 07777))
639 log_debug("\"%s\" has right mode %o", path, st.st_mode);
640 else {
641 log_debug("chmod \"%s\" to mode %o", path, m);
642 if (chmod(fn, m) < 0)
643 return log_error_errno(errno, "chmod(%s) failed: %m", path);
644 }
645 }
646
647 if ((i->uid != st.st_uid || i->gid != st.st_gid) &&
648 (i->uid_set || i->gid_set)) {
649 log_debug("chown \"%s\" to "UID_FMT"."GID_FMT,
650 path,
651 i->uid_set ? i->uid : UID_INVALID,
652 i->gid_set ? i->gid : GID_INVALID);
653 if (chown(fn,
654 i->uid_set ? i->uid : UID_INVALID,
655 i->gid_set ? i->gid : GID_INVALID) < 0)
656 return log_error_errno(errno, "chown(%s) failed: %m", path);
657 }
658 }
659
660 fd = safe_close(fd);
661
662 return label_fix(path, false, false);
663 }
664
665 static int parse_xattrs_from_arg(Item *i) {
666 const char *p;
667 int r;
668
669 assert(i);
670 assert(i->argument);
671
672 p = i->argument;
673
674 for (;;) {
675 _cleanup_free_ char *name = NULL, *value = NULL, *xattr = NULL, *xattr_replaced = NULL;
676
677 r = extract_first_word(&p, &xattr, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE);
678 if (r < 0)
679 log_warning_errno(r, "Failed to parse extended attribute '%s', ignoring: %m", p);
680 if (r <= 0)
681 break;
682
683 r = specifier_printf(xattr, specifier_table, NULL, &xattr_replaced);
684 if (r < 0)
685 return log_error_errno(r, "Failed to replace specifiers in extended attribute '%s': %m", xattr);
686
687 r = split_pair(xattr_replaced, "=", &name, &value);
688 if (r < 0) {
689 log_warning_errno(r, "Failed to parse extended attribute, ignoring: %s", xattr);
690 continue;
691 }
692
693 if (isempty(name) || isempty(value)) {
694 log_warning("Malformed extended attribute found, ignoring: %s", xattr);
695 continue;
696 }
697
698 if (strv_push_pair(&i->xattrs, name, value) < 0)
699 return log_oom();
700
701 name = value = NULL;
702 }
703
704 return 0;
705 }
706
707 static int path_set_xattrs(Item *i, const char *path) {
708 char **name, **value;
709
710 assert(i);
711 assert(path);
712
713 STRV_FOREACH_PAIR(name, value, i->xattrs) {
714 int n;
715
716 n = strlen(*value);
717 log_debug("Setting extended attribute '%s=%s' on %s.", *name, *value, path);
718 if (lsetxattr(path, *name, *value, n, 0) < 0) {
719 log_error("Setting extended attribute %s=%s on %s failed: %m", *name, *value, path);
720 return -errno;
721 }
722 }
723 return 0;
724 }
725
726 static int parse_acls_from_arg(Item *item) {
727 #ifdef HAVE_ACL
728 int r;
729
730 assert(item);
731
732 /* If force (= modify) is set, we will not modify the acl
733 * afterwards, so the mask can be added now if necessary. */
734
735 r = parse_acl(item->argument, &item->acl_access, &item->acl_default, !item->force);
736 if (r < 0)
737 log_warning_errno(r, "Failed to parse ACL \"%s\": %m. Ignoring", item->argument);
738 #else
739 log_warning_errno(ENOSYS, "ACLs are not supported. Ignoring");
740 #endif
741
742 return 0;
743 }
744
745 #ifdef HAVE_ACL
746 static int path_set_acl(const char *path, const char *pretty, acl_type_t type, acl_t acl, bool modify) {
747 _cleanup_(acl_free_charpp) char *t = NULL;
748 _cleanup_(acl_freep) acl_t dup = NULL;
749 int r;
750
751 /* Returns 0 for success, positive error if already warned,
752 * negative error otherwise. */
753
754 if (modify) {
755 r = acls_for_file(path, type, acl, &dup);
756 if (r < 0)
757 return r;
758
759 r = calc_acl_mask_if_needed(&dup);
760 if (r < 0)
761 return r;
762 } else {
763 dup = acl_dup(acl);
764 if (!dup)
765 return -errno;
766
767 /* the mask was already added earlier if needed */
768 }
769
770 r = add_base_acls_if_needed(&dup, path);
771 if (r < 0)
772 return r;
773
774 t = acl_to_any_text(dup, NULL, ',', TEXT_ABBREVIATE);
775 log_debug("Setting %s ACL %s on %s.",
776 type == ACL_TYPE_ACCESS ? "access" : "default",
777 strna(t), pretty);
778
779 r = acl_set_file(path, type, dup);
780 if (r < 0)
781 /* Return positive to indicate we already warned */
782 return -log_error_errno(errno,
783 "Setting %s ACL \"%s\" on %s failed: %m",
784 type == ACL_TYPE_ACCESS ? "access" : "default",
785 strna(t), pretty);
786
787 return 0;
788 }
789 #endif
790
791 static int path_set_acls(Item *item, const char *path) {
792 int r = 0;
793 #ifdef HAVE_ACL
794 char fn[strlen("/proc/self/fd/") + DECIMAL_STR_MAX(int)];
795 _cleanup_close_ int fd = -1;
796 struct stat st;
797
798 assert(item);
799 assert(path);
800
801 fd = open(path, O_RDONLY|O_NOFOLLOW|O_CLOEXEC|O_PATH|O_NOATIME);
802 if (fd < 0)
803 return log_error_errno(errno, "Adjusting ACL of %s failed: %m", path);
804
805 if (fstatat(fd, "", &st, AT_EMPTY_PATH) < 0)
806 return log_error_errno(errno, "Failed to fstat() file %s: %m", path);
807
808 if (S_ISLNK(st.st_mode)) {
809 log_debug("Skipping ACL fix for symlink %s.", path);
810 return 0;
811 }
812
813 xsprintf(fn, "/proc/self/fd/%i", fd);
814
815 if (item->acl_access)
816 r = path_set_acl(fn, path, ACL_TYPE_ACCESS, item->acl_access, item->force);
817
818 if (r == 0 && item->acl_default)
819 r = path_set_acl(fn, path, ACL_TYPE_DEFAULT, item->acl_default, item->force);
820
821 if (r > 0)
822 return -r; /* already warned */
823 else if (r == -EOPNOTSUPP) {
824 log_debug_errno(r, "ACLs not supported by file system at %s", path);
825 return 0;
826 } else if (r < 0)
827 log_error_errno(r, "ACL operation on \"%s\" failed: %m", path);
828 #endif
829 return r;
830 }
831
832 #define ATTRIBUTES_ALL \
833 (FS_NOATIME_FL | \
834 FS_SYNC_FL | \
835 FS_DIRSYNC_FL | \
836 FS_APPEND_FL | \
837 FS_COMPR_FL | \
838 FS_NODUMP_FL | \
839 FS_EXTENT_FL | \
840 FS_IMMUTABLE_FL | \
841 FS_JOURNAL_DATA_FL | \
842 FS_SECRM_FL | \
843 FS_UNRM_FL | \
844 FS_NOTAIL_FL | \
845 FS_TOPDIR_FL | \
846 FS_NOCOW_FL)
847
848 static int parse_attribute_from_arg(Item *item) {
849
850 static const struct {
851 char character;
852 unsigned value;
853 } attributes[] = {
854 { 'A', FS_NOATIME_FL }, /* do not update atime */
855 { 'S', FS_SYNC_FL }, /* Synchronous updates */
856 { 'D', FS_DIRSYNC_FL }, /* dirsync behaviour (directories only) */
857 { 'a', FS_APPEND_FL }, /* writes to file may only append */
858 { 'c', FS_COMPR_FL }, /* Compress file */
859 { 'd', FS_NODUMP_FL }, /* do not dump file */
860 { 'e', FS_EXTENT_FL }, /* Top of directory hierarchies*/
861 { 'i', FS_IMMUTABLE_FL }, /* Immutable file */
862 { 'j', FS_JOURNAL_DATA_FL }, /* Reserved for ext3 */
863 { 's', FS_SECRM_FL }, /* Secure deletion */
864 { 'u', FS_UNRM_FL }, /* Undelete */
865 { 't', FS_NOTAIL_FL }, /* file tail should not be merged */
866 { 'T', FS_TOPDIR_FL }, /* Top of directory hierarchies*/
867 { 'C', FS_NOCOW_FL }, /* Do not cow file */
868 };
869
870 enum {
871 MODE_ADD,
872 MODE_DEL,
873 MODE_SET
874 } mode = MODE_ADD;
875
876 unsigned value = 0, mask = 0;
877 const char *p;
878
879 assert(item);
880
881 p = item->argument;
882 if (p) {
883 if (*p == '+') {
884 mode = MODE_ADD;
885 p++;
886 } else if (*p == '-') {
887 mode = MODE_DEL;
888 p++;
889 } else if (*p == '=') {
890 mode = MODE_SET;
891 p++;
892 }
893 }
894
895 if (isempty(p) && mode != MODE_SET) {
896 log_error("Setting file attribute on '%s' needs an attribute specification.", item->path);
897 return -EINVAL;
898 }
899
900 for (; p && *p ; p++) {
901 unsigned i, v;
902
903 for (i = 0; i < ELEMENTSOF(attributes); i++)
904 if (*p == attributes[i].character)
905 break;
906
907 if (i >= ELEMENTSOF(attributes)) {
908 log_error("Unknown file attribute '%c' on '%s'.", *p, item->path);
909 return -EINVAL;
910 }
911
912 v = attributes[i].value;
913
914 if (mode == MODE_ADD || mode == MODE_SET)
915 value |= v;
916 else
917 value &= ~v;
918
919 mask |= v;
920 }
921
922 if (mode == MODE_SET)
923 mask |= ATTRIBUTES_ALL;
924
925 assert(mask != 0);
926
927 item->attribute_mask = mask;
928 item->attribute_value = value;
929 item->attribute_set = true;
930
931 return 0;
932 }
933
934 static int path_set_attribute(Item *item, const char *path) {
935 _cleanup_close_ int fd = -1;
936 struct stat st;
937 unsigned f;
938 int r;
939
940 if (!item->attribute_set || item->attribute_mask == 0)
941 return 0;
942
943 fd = open(path, O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_NOATIME|O_NOFOLLOW);
944 if (fd < 0) {
945 if (errno == ELOOP)
946 return log_error_errno(errno, "Skipping file attributes adjustment on symlink %s.", path);
947
948 return log_error_errno(errno, "Cannot open '%s': %m", path);
949 }
950
951 if (fstat(fd, &st) < 0)
952 return log_error_errno(errno, "Cannot stat '%s': %m", path);
953
954 /* Issuing the file attribute ioctls on device nodes is not
955 * safe, as that will be delivered to the drivers, not the
956 * file system containing the device node. */
957 if (!S_ISREG(st.st_mode) && !S_ISDIR(st.st_mode)) {
958 log_error("Setting file flags is only supported on regular files and directories, cannot set on '%s'.", path);
959 return -EINVAL;
960 }
961
962 f = item->attribute_value & item->attribute_mask;
963
964 /* Mask away directory-specific flags */
965 if (!S_ISDIR(st.st_mode))
966 f &= ~FS_DIRSYNC_FL;
967
968 r = chattr_fd(fd, f, item->attribute_mask);
969 if (r < 0)
970 log_full_errno(r == -ENOTTY ? LOG_DEBUG : LOG_WARNING,
971 r,
972 "Cannot set file attribute for '%s', value=0x%08x, mask=0x%08x: %m",
973 path, item->attribute_value, item->attribute_mask);
974
975 return 0;
976 }
977
978 static int write_one_file(Item *i, const char *path) {
979 _cleanup_close_ int fd = -1;
980 int flags, r = 0;
981 struct stat st;
982
983 assert(i);
984 assert(path);
985
986 flags = i->type == CREATE_FILE ? O_CREAT|O_APPEND|O_NOFOLLOW :
987 i->type == TRUNCATE_FILE ? O_CREAT|O_TRUNC|O_NOFOLLOW : 0;
988
989 RUN_WITH_UMASK(0000) {
990 mac_selinux_create_file_prepare(path, S_IFREG);
991 fd = open(path, flags|O_NDELAY|O_CLOEXEC|O_WRONLY|O_NOCTTY, i->mode);
992 mac_selinux_create_file_clear();
993 }
994
995 if (fd < 0) {
996 if (i->type == WRITE_FILE && errno == ENOENT) {
997 log_debug_errno(errno, "Not writing \"%s\": %m", path);
998 return 0;
999 }
1000
1001 r = -errno;
1002 if (!i->argument && errno == EROFS && stat(path, &st) == 0 &&
1003 (i->type == CREATE_FILE || st.st_size == 0))
1004 goto check_mode;
1005
1006 return log_error_errno(r, "Failed to create file %s: %m", path);
1007 }
1008
1009 if (i->argument) {
1010 _cleanup_free_ char *unescaped = NULL, *replaced = NULL;
1011
1012 log_debug("%s to \"%s\".", i->type == CREATE_FILE ? "Appending" : "Writing", path);
1013
1014 r = cunescape(i->argument, 0, &unescaped);
1015 if (r < 0)
1016 return log_error_errno(r, "Failed to unescape parameter to write: %s", i->argument);
1017
1018 r = specifier_printf(unescaped, specifier_table, NULL, &replaced);
1019 if (r < 0)
1020 return log_error_errno(r, "Failed to replace specifiers in parameter to write '%s': %m", unescaped);
1021
1022 r = loop_write(fd, replaced, strlen(replaced), false);
1023 if (r < 0)
1024 return log_error_errno(r, "Failed to write file \"%s\": %m", path);
1025 } else
1026 log_debug("\"%s\" has been created.", path);
1027
1028 fd = safe_close(fd);
1029
1030 if (stat(path, &st) < 0)
1031 return log_error_errno(errno, "stat(%s) failed: %m", path);
1032
1033 check_mode:
1034 if (!S_ISREG(st.st_mode)) {
1035 log_error("%s is not a file.", path);
1036 return -EEXIST;
1037 }
1038
1039 r = path_set_perms(i, path);
1040 if (r < 0)
1041 return r;
1042
1043 return 0;
1044 }
1045
1046 typedef int (*action_t)(Item *, const char *);
1047
1048 static int item_do_children(Item *i, const char *path, action_t action) {
1049 _cleanup_closedir_ DIR *d;
1050 int r = 0;
1051
1052 assert(i);
1053 assert(path);
1054
1055 /* This returns the first error we run into, but nevertheless
1056 * tries to go on */
1057
1058 d = opendir_nomod(path);
1059 if (!d)
1060 return errno == ENOENT || errno == ENOTDIR ? 0 : -errno;
1061
1062 for (;;) {
1063 _cleanup_free_ char *p = NULL;
1064 struct dirent *de;
1065 int q;
1066
1067 errno = 0;
1068 de = readdir(d);
1069 if (!de) {
1070 if (errno != 0 && r == 0)
1071 r = -errno;
1072
1073 break;
1074 }
1075
1076 if (STR_IN_SET(de->d_name, ".", ".."))
1077 continue;
1078
1079 p = strjoin(path, "/", de->d_name, NULL);
1080 if (!p)
1081 return -ENOMEM;
1082
1083 q = action(i, p);
1084 if (q < 0 && q != -ENOENT && r == 0)
1085 r = q;
1086
1087 if (IN_SET(de->d_type, DT_UNKNOWN, DT_DIR)) {
1088 q = item_do_children(i, p, action);
1089 if (q < 0 && r == 0)
1090 r = q;
1091 }
1092 }
1093
1094 return r;
1095 }
1096
1097 static int glob_item(Item *i, action_t action, bool recursive) {
1098 _cleanup_globfree_ glob_t g = {
1099 .gl_closedir = (void (*)(void *)) closedir,
1100 .gl_readdir = (struct dirent *(*)(void *)) readdir,
1101 .gl_opendir = (void *(*)(const char *)) opendir_nomod,
1102 .gl_lstat = lstat,
1103 .gl_stat = stat,
1104 };
1105 int r = 0, k;
1106 char **fn;
1107
1108 errno = 0;
1109 k = glob(i->path, GLOB_NOSORT|GLOB_BRACE|GLOB_ALTDIRFUNC, NULL, &g);
1110 if (k != 0 && k != GLOB_NOMATCH)
1111 return log_error_errno(errno ?: EIO, "glob(%s) failed: %m", i->path);
1112
1113 STRV_FOREACH(fn, g.gl_pathv) {
1114 k = action(i, *fn);
1115 if (k < 0 && r == 0)
1116 r = k;
1117
1118 if (recursive) {
1119 k = item_do_children(i, *fn, action);
1120 if (k < 0 && r == 0)
1121 r = k;
1122 }
1123 }
1124
1125 return r;
1126 }
1127
1128 typedef enum {
1129 CREATION_NORMAL,
1130 CREATION_EXISTING,
1131 CREATION_FORCE,
1132 _CREATION_MODE_MAX,
1133 _CREATION_MODE_INVALID = -1
1134 } CreationMode;
1135
1136 static const char *creation_mode_verb_table[_CREATION_MODE_MAX] = {
1137 [CREATION_NORMAL] = "Created",
1138 [CREATION_EXISTING] = "Found existing",
1139 [CREATION_FORCE] = "Created replacement",
1140 };
1141
1142 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(creation_mode_verb, CreationMode);
1143
1144 static int create_item(Item *i) {
1145 _cleanup_free_ char *resolved = NULL;
1146 struct stat st;
1147 int r = 0;
1148 CreationMode creation;
1149
1150 assert(i);
1151
1152 log_debug("Running create action for entry %c %s", (char) i->type, i->path);
1153
1154 switch (i->type) {
1155
1156 case IGNORE_PATH:
1157 case IGNORE_DIRECTORY_PATH:
1158 case REMOVE_PATH:
1159 case RECURSIVE_REMOVE_PATH:
1160 return 0;
1161
1162 case CREATE_FILE:
1163 case TRUNCATE_FILE:
1164 r = write_one_file(i, i->path);
1165 if (r < 0)
1166 return r;
1167 break;
1168
1169 case COPY_FILES: {
1170 r = specifier_printf(i->argument, specifier_table, NULL, &resolved);
1171 if (r < 0)
1172 return log_error_errno(r, "Failed to substitute specifiers in copy source %s: %m", i->argument);
1173
1174 log_debug("Copying tree \"%s\" to \"%s\".", resolved, i->path);
1175 r = copy_tree(resolved, i->path, false);
1176
1177 if (r == -EROFS && stat(i->path, &st) == 0)
1178 r = -EEXIST;
1179
1180 if (r < 0) {
1181 struct stat a, b;
1182
1183 if (r != -EEXIST)
1184 return log_error_errno(r, "Failed to copy files to %s: %m", i->path);
1185
1186 if (stat(resolved, &a) < 0)
1187 return log_error_errno(errno, "stat(%s) failed: %m", resolved);
1188
1189 if (stat(i->path, &b) < 0)
1190 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1191
1192 if ((a.st_mode ^ b.st_mode) & S_IFMT) {
1193 log_debug("Can't copy to %s, file exists already and is of different type", i->path);
1194 return 0;
1195 }
1196 }
1197
1198 r = path_set_perms(i, i->path);
1199 if (r < 0)
1200 return r;
1201
1202 break;
1203
1204 case WRITE_FILE:
1205 r = glob_item(i, write_one_file, false);
1206 if (r < 0)
1207 return r;
1208
1209 break;
1210
1211 case CREATE_DIRECTORY:
1212 case TRUNCATE_DIRECTORY:
1213 case CREATE_SUBVOLUME:
1214 case CREATE_SUBVOLUME_INHERIT_QUOTA:
1215 case CREATE_SUBVOLUME_NEW_QUOTA:
1216
1217 RUN_WITH_UMASK(0000)
1218 mkdir_parents_label(i->path, 0755);
1219
1220 if (IN_SET(i->type, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA)) {
1221 RUN_WITH_UMASK((~i->mode) & 0777)
1222 r = btrfs_subvol_make(i->path);
1223 } else
1224 r = 0;
1225
1226 if (IN_SET(i->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY) || r == -ENOTTY)
1227 RUN_WITH_UMASK(0000)
1228 r = mkdir_label(i->path, i->mode);
1229
1230 if (r < 0) {
1231 int k;
1232
1233 if (r != -EEXIST && r != -EROFS)
1234 return log_error_errno(r, "Failed to create directory or subvolume \"%s\": %m", i->path);
1235
1236 k = is_dir(i->path, false);
1237 if (k == -ENOENT && r == -EROFS)
1238 return log_error_errno(r, "%s does not exist and cannot be created as the file system is read-only.", i->path);
1239 if (k < 0)
1240 return log_error_errno(k, "Failed to check if %s exists: %m", i->path);
1241 if (!k) {
1242 log_warning("\"%s\" already exists and is not a directory.", i->path);
1243 return 0;
1244 }
1245
1246 creation = CREATION_EXISTING;
1247 } else
1248 creation = CREATION_NORMAL;
1249
1250 log_debug("%s directory \"%s\".", creation_mode_verb_to_string(creation), i->path);
1251
1252 if (IN_SET(i->type, CREATE_SUBVOLUME_NEW_QUOTA, CREATE_SUBVOLUME_INHERIT_QUOTA)) {
1253 r = btrfs_subvol_auto_qgroup(i->path, 0, i->type == CREATE_SUBVOLUME_NEW_QUOTA);
1254 if (r == -ENOTTY) {
1255 log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" because of unsupported file system or because directory is not a subvolume: %m", i->path);
1256 return 0;
1257 }
1258 if (r == -EROFS) {
1259 log_debug_errno(r, "Couldn't adjust quota for subvolume \"%s\" because of read-only file system: %m", i->path);
1260 return 0;
1261 }
1262 if (r < 0)
1263 return log_error_errno(r, "Failed to adjust quota for subvolume \"%s\": %m", i->path);
1264 if (r > 0)
1265 log_debug("Adjusted quota for subvolume \"%s\".", i->path);
1266 if (r == 0)
1267 log_debug("Quota for subvolume \"%s\" already in place, no change made.", i->path);
1268 }
1269
1270 r = path_set_perms(i, i->path);
1271 if (r < 0)
1272 return r;
1273
1274 break;
1275
1276 case CREATE_FIFO:
1277
1278 RUN_WITH_UMASK(0000) {
1279 mac_selinux_create_file_prepare(i->path, S_IFIFO);
1280 r = mkfifo(i->path, i->mode);
1281 mac_selinux_create_file_clear();
1282 }
1283
1284 if (r < 0) {
1285 if (errno != EEXIST)
1286 return log_error_errno(errno, "Failed to create fifo %s: %m", i->path);
1287
1288 if (lstat(i->path, &st) < 0)
1289 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1290
1291 if (!S_ISFIFO(st.st_mode)) {
1292
1293 if (i->force) {
1294 RUN_WITH_UMASK(0000) {
1295 mac_selinux_create_file_prepare(i->path, S_IFIFO);
1296 r = mkfifo_atomic(i->path, i->mode);
1297 mac_selinux_create_file_clear();
1298 }
1299
1300 if (r < 0)
1301 return log_error_errno(r, "Failed to create fifo %s: %m", i->path);
1302 creation = CREATION_FORCE;
1303 } else {
1304 log_warning("\"%s\" already exists and is not a fifo.", i->path);
1305 return 0;
1306 }
1307 } else
1308 creation = CREATION_EXISTING;
1309 } else
1310 creation = CREATION_NORMAL;
1311 log_debug("%s fifo \"%s\".", creation_mode_verb_to_string(creation), i->path);
1312
1313 r = path_set_perms(i, i->path);
1314 if (r < 0)
1315 return r;
1316
1317 break;
1318 }
1319
1320 case CREATE_SYMLINK: {
1321 r = specifier_printf(i->argument, specifier_table, NULL, &resolved);
1322 if (r < 0)
1323 return log_error_errno(r, "Failed to substitute specifiers in symlink target %s: %m", i->argument);
1324
1325 mac_selinux_create_file_prepare(i->path, S_IFLNK);
1326 r = symlink(resolved, i->path);
1327 mac_selinux_create_file_clear();
1328
1329 if (r < 0) {
1330 _cleanup_free_ char *x = NULL;
1331
1332 if (errno != EEXIST)
1333 return log_error_errno(errno, "symlink(%s, %s) failed: %m", resolved, i->path);
1334
1335 r = readlink_malloc(i->path, &x);
1336 if (r < 0 || !streq(resolved, x)) {
1337
1338 if (i->force) {
1339 mac_selinux_create_file_prepare(i->path, S_IFLNK);
1340 r = symlink_atomic(resolved, i->path);
1341 mac_selinux_create_file_clear();
1342
1343 if (r < 0)
1344 return log_error_errno(r, "symlink(%s, %s) failed: %m", resolved, i->path);
1345
1346 creation = CREATION_FORCE;
1347 } else {
1348 log_debug("\"%s\" is not a symlink or does not point to the correct path.", i->path);
1349 return 0;
1350 }
1351 } else
1352 creation = CREATION_EXISTING;
1353 } else
1354
1355 creation = CREATION_NORMAL;
1356 log_debug("%s symlink \"%s\".", creation_mode_verb_to_string(creation), i->path);
1357 break;
1358 }
1359
1360 case CREATE_BLOCK_DEVICE:
1361 case CREATE_CHAR_DEVICE: {
1362 mode_t file_type;
1363
1364 if (have_effective_cap(CAP_MKNOD) == 0) {
1365 /* In a container we lack CAP_MKNOD. We
1366 shouldn't attempt to create the device node in
1367 that case to avoid noise, and we don't support
1368 virtualized devices in containers anyway. */
1369
1370 log_debug("We lack CAP_MKNOD, skipping creation of device node %s.", i->path);
1371 return 0;
1372 }
1373
1374 file_type = i->type == CREATE_BLOCK_DEVICE ? S_IFBLK : S_IFCHR;
1375
1376 RUN_WITH_UMASK(0000) {
1377 mac_selinux_create_file_prepare(i->path, file_type);
1378 r = mknod(i->path, i->mode | file_type, i->major_minor);
1379 mac_selinux_create_file_clear();
1380 }
1381
1382 if (r < 0) {
1383 if (errno == EPERM) {
1384 log_debug("We lack permissions, possibly because of cgroup configuration; "
1385 "skipping creation of device node %s.", i->path);
1386 return 0;
1387 }
1388
1389 if (errno != EEXIST)
1390 return log_error_errno(errno, "Failed to create device node %s: %m", i->path);
1391
1392 if (lstat(i->path, &st) < 0)
1393 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1394
1395 if ((st.st_mode & S_IFMT) != file_type) {
1396
1397 if (i->force) {
1398
1399 RUN_WITH_UMASK(0000) {
1400 mac_selinux_create_file_prepare(i->path, file_type);
1401 r = mknod_atomic(i->path, i->mode | file_type, i->major_minor);
1402 mac_selinux_create_file_clear();
1403 }
1404
1405 if (r < 0)
1406 return log_error_errno(r, "Failed to create device node \"%s\": %m", i->path);
1407 creation = CREATION_FORCE;
1408 } else {
1409 log_debug("%s is not a device node.", i->path);
1410 return 0;
1411 }
1412 } else
1413 creation = CREATION_EXISTING;
1414 } else
1415 creation = CREATION_NORMAL;
1416
1417 log_debug("%s %s device node \"%s\" %u:%u.",
1418 creation_mode_verb_to_string(creation),
1419 i->type == CREATE_BLOCK_DEVICE ? "block" : "char",
1420 i->path, major(i->mode), minor(i->mode));
1421
1422 r = path_set_perms(i, i->path);
1423 if (r < 0)
1424 return r;
1425
1426 break;
1427 }
1428
1429 case ADJUST_MODE:
1430 case RELABEL_PATH:
1431 r = glob_item(i, path_set_perms, false);
1432 if (r < 0)
1433 return r;
1434 break;
1435
1436 case RECURSIVE_RELABEL_PATH:
1437 r = glob_item(i, path_set_perms, true);
1438 if (r < 0)
1439 return r;
1440 break;
1441
1442 case SET_XATTR:
1443 r = glob_item(i, path_set_xattrs, false);
1444 if (r < 0)
1445 return r;
1446 break;
1447
1448 case RECURSIVE_SET_XATTR:
1449 r = glob_item(i, path_set_xattrs, true);
1450 if (r < 0)
1451 return r;
1452 break;
1453
1454 case SET_ACL:
1455 r = glob_item(i, path_set_acls, false);
1456 if (r < 0)
1457 return r;
1458 break;
1459
1460 case RECURSIVE_SET_ACL:
1461 r = glob_item(i, path_set_acls, true);
1462 if (r < 0)
1463 return r;
1464 break;
1465
1466 case SET_ATTRIBUTE:
1467 r = glob_item(i, path_set_attribute, false);
1468 if (r < 0)
1469 return r;
1470 break;
1471
1472 case RECURSIVE_SET_ATTRIBUTE:
1473 r = glob_item(i, path_set_attribute, true);
1474 if (r < 0)
1475 return r;
1476 break;
1477 }
1478
1479 return 0;
1480 }
1481
1482 static int remove_item_instance(Item *i, const char *instance) {
1483 int r;
1484
1485 assert(i);
1486
1487 switch (i->type) {
1488
1489 case REMOVE_PATH:
1490 if (remove(instance) < 0 && errno != ENOENT)
1491 return log_error_errno(errno, "rm(%s): %m", instance);
1492
1493 break;
1494
1495 case TRUNCATE_DIRECTORY:
1496 case RECURSIVE_REMOVE_PATH:
1497 /* FIXME: we probably should use dir_cleanup() here
1498 * instead of rm_rf() so that 'x' is honoured. */
1499 log_debug("rm -rf \"%s\"", instance);
1500 r = rm_rf(instance, (i->type == RECURSIVE_REMOVE_PATH ? REMOVE_ROOT|REMOVE_SUBVOLUME : 0) | REMOVE_PHYSICAL);
1501 if (r < 0 && r != -ENOENT)
1502 return log_error_errno(r, "rm_rf(%s): %m", instance);
1503
1504 break;
1505
1506 default:
1507 assert_not_reached("wut?");
1508 }
1509
1510 return 0;
1511 }
1512
1513 static int remove_item(Item *i) {
1514 int r = 0;
1515
1516 assert(i);
1517
1518 log_debug("Running remove action for entry %c %s", (char) i->type, i->path);
1519
1520 switch (i->type) {
1521
1522 case CREATE_FILE:
1523 case TRUNCATE_FILE:
1524 case CREATE_DIRECTORY:
1525 case CREATE_SUBVOLUME:
1526 case CREATE_SUBVOLUME_INHERIT_QUOTA:
1527 case CREATE_SUBVOLUME_NEW_QUOTA:
1528 case CREATE_FIFO:
1529 case CREATE_SYMLINK:
1530 case CREATE_CHAR_DEVICE:
1531 case CREATE_BLOCK_DEVICE:
1532 case IGNORE_PATH:
1533 case IGNORE_DIRECTORY_PATH:
1534 case ADJUST_MODE:
1535 case RELABEL_PATH:
1536 case RECURSIVE_RELABEL_PATH:
1537 case WRITE_FILE:
1538 case COPY_FILES:
1539 case SET_XATTR:
1540 case RECURSIVE_SET_XATTR:
1541 case SET_ACL:
1542 case RECURSIVE_SET_ACL:
1543 case SET_ATTRIBUTE:
1544 case RECURSIVE_SET_ATTRIBUTE:
1545 break;
1546
1547 case REMOVE_PATH:
1548 case TRUNCATE_DIRECTORY:
1549 case RECURSIVE_REMOVE_PATH:
1550 r = glob_item(i, remove_item_instance, false);
1551 break;
1552 }
1553
1554 return r;
1555 }
1556
1557 static int clean_item_instance(Item *i, const char* instance) {
1558 _cleanup_closedir_ DIR *d = NULL;
1559 struct stat s, ps;
1560 bool mountpoint;
1561 usec_t cutoff, n;
1562 char timestamp[FORMAT_TIMESTAMP_MAX];
1563
1564 assert(i);
1565
1566 if (!i->age_set)
1567 return 0;
1568
1569 n = now(CLOCK_REALTIME);
1570 if (n < i->age)
1571 return 0;
1572
1573 cutoff = n - i->age;
1574
1575 d = opendir_nomod(instance);
1576 if (!d) {
1577 if (errno == ENOENT || errno == ENOTDIR) {
1578 log_debug_errno(errno, "Directory \"%s\": %m", instance);
1579 return 0;
1580 }
1581
1582 log_error_errno(errno, "Failed to open directory %s: %m", instance);
1583 return -errno;
1584 }
1585
1586 if (fstat(dirfd(d), &s) < 0)
1587 return log_error_errno(errno, "stat(%s) failed: %m", i->path);
1588
1589 if (!S_ISDIR(s.st_mode)) {
1590 log_error("%s is not a directory.", i->path);
1591 return -ENOTDIR;
1592 }
1593
1594 if (fstatat(dirfd(d), "..", &ps, AT_SYMLINK_NOFOLLOW) != 0)
1595 return log_error_errno(errno, "stat(%s/..) failed: %m", i->path);
1596
1597 mountpoint = s.st_dev != ps.st_dev || s.st_ino == ps.st_ino;
1598
1599 log_debug("Cleanup threshold for %s \"%s\" is %s",
1600 mountpoint ? "mount point" : "directory",
1601 instance,
1602 format_timestamp_us(timestamp, sizeof(timestamp), cutoff));
1603
1604 return dir_cleanup(i, instance, d, &s, cutoff, s.st_dev, mountpoint,
1605 MAX_DEPTH, i->keep_first_level);
1606 }
1607
1608 static int clean_item(Item *i) {
1609 int r = 0;
1610
1611 assert(i);
1612
1613 log_debug("Running clean action for entry %c %s", (char) i->type, i->path);
1614
1615 switch (i->type) {
1616 case CREATE_DIRECTORY:
1617 case CREATE_SUBVOLUME:
1618 case CREATE_SUBVOLUME_INHERIT_QUOTA:
1619 case CREATE_SUBVOLUME_NEW_QUOTA:
1620 case TRUNCATE_DIRECTORY:
1621 case IGNORE_PATH:
1622 case COPY_FILES:
1623 clean_item_instance(i, i->path);
1624 break;
1625 case IGNORE_DIRECTORY_PATH:
1626 r = glob_item(i, clean_item_instance, false);
1627 break;
1628 default:
1629 break;
1630 }
1631
1632 return r;
1633 }
1634
1635 static int process_item_array(ItemArray *array);
1636
1637 static int process_item(Item *i) {
1638 int r, q, p, t = 0;
1639 _cleanup_free_ char *prefix = NULL;
1640
1641 assert(i);
1642
1643 if (i->done)
1644 return 0;
1645
1646 i->done = true;
1647
1648 prefix = malloc(strlen(i->path) + 1);
1649 if (!prefix)
1650 return log_oom();
1651
1652 PATH_FOREACH_PREFIX(prefix, i->path) {
1653 ItemArray *j;
1654
1655 j = ordered_hashmap_get(items, prefix);
1656 if (j) {
1657 int s;
1658
1659 s = process_item_array(j);
1660 if (s < 0 && t == 0)
1661 t = s;
1662 }
1663 }
1664
1665 r = arg_create ? create_item(i) : 0;
1666 q = arg_remove ? remove_item(i) : 0;
1667 p = arg_clean ? clean_item(i) : 0;
1668
1669 return t < 0 ? t :
1670 r < 0 ? r :
1671 q < 0 ? q :
1672 p;
1673 }
1674
1675 static int process_item_array(ItemArray *array) {
1676 unsigned n;
1677 int r = 0, k;
1678
1679 assert(array);
1680
1681 for (n = 0; n < array->count; n++) {
1682 k = process_item(array->items + n);
1683 if (k < 0 && r == 0)
1684 r = k;
1685 }
1686
1687 return r;
1688 }
1689
1690 static void item_free_contents(Item *i) {
1691 assert(i);
1692 free(i->path);
1693 free(i->argument);
1694 strv_free(i->xattrs);
1695
1696 #ifdef HAVE_ACL
1697 acl_free(i->acl_access);
1698 acl_free(i->acl_default);
1699 #endif
1700 }
1701
1702 static void item_array_free(ItemArray *a) {
1703 unsigned n;
1704
1705 if (!a)
1706 return;
1707
1708 for (n = 0; n < a->count; n++)
1709 item_free_contents(a->items + n);
1710 free(a->items);
1711 free(a);
1712 }
1713
1714 static int item_compare(const void *a, const void *b) {
1715 const Item *x = a, *y = b;
1716
1717 /* Make sure that the ownership taking item is put first, so
1718 * that we first create the node, and then can adjust it */
1719
1720 if (takes_ownership(x->type) && !takes_ownership(y->type))
1721 return -1;
1722 if (!takes_ownership(x->type) && takes_ownership(y->type))
1723 return 1;
1724
1725 return (int) x->type - (int) y->type;
1726 }
1727
1728 static bool item_compatible(Item *a, Item *b) {
1729 assert(a);
1730 assert(b);
1731 assert(streq(a->path, b->path));
1732
1733 if (takes_ownership(a->type) && takes_ownership(b->type))
1734 /* check if the items are the same */
1735 return streq_ptr(a->argument, b->argument) &&
1736
1737 a->uid_set == b->uid_set &&
1738 a->uid == b->uid &&
1739
1740 a->gid_set == b->gid_set &&
1741 a->gid == b->gid &&
1742
1743 a->mode_set == b->mode_set &&
1744 a->mode == b->mode &&
1745
1746 a->age_set == b->age_set &&
1747 a->age == b->age &&
1748
1749 a->mask_perms == b->mask_perms &&
1750
1751 a->keep_first_level == b->keep_first_level &&
1752
1753 a->major_minor == b->major_minor;
1754
1755 return true;
1756 }
1757
1758 static bool should_include_path(const char *path) {
1759 char **prefix;
1760
1761 STRV_FOREACH(prefix, arg_exclude_prefixes)
1762 if (path_startswith(path, *prefix)) {
1763 log_debug("Entry \"%s\" matches exclude prefix \"%s\", skipping.",
1764 path, *prefix);
1765 return false;
1766 }
1767
1768 STRV_FOREACH(prefix, arg_include_prefixes)
1769 if (path_startswith(path, *prefix)) {
1770 log_debug("Entry \"%s\" matches include prefix \"%s\".", path, *prefix);
1771 return true;
1772 }
1773
1774 /* no matches, so we should include this path only if we
1775 * have no whitelist at all */
1776 if (strv_length(arg_include_prefixes) == 0)
1777 return true;
1778
1779 log_debug("Entry \"%s\" does not match any include prefix, skipping.", path);
1780 return false;
1781 }
1782
1783 static int parse_line(const char *fname, unsigned line, const char *buffer) {
1784
1785 _cleanup_free_ char *action = NULL, *mode = NULL, *user = NULL, *group = NULL, *age = NULL, *path = NULL;
1786 _cleanup_(item_free_contents) Item i = {};
1787 ItemArray *existing;
1788 OrderedHashmap *h;
1789 int r, pos;
1790 bool force = false, boot = false;
1791
1792 assert(fname);
1793 assert(line >= 1);
1794 assert(buffer);
1795
1796 r = extract_many_words(
1797 &buffer,
1798 NULL,
1799 EXTRACT_QUOTES,
1800 &action,
1801 &path,
1802 &mode,
1803 &user,
1804 &group,
1805 &age,
1806 NULL);
1807 if (r < 0)
1808 return log_error_errno(r, "[%s:%u] Failed to parse line: %m", fname, line);
1809 else if (r < 2) {
1810 log_error("[%s:%u] Syntax error.", fname, line);
1811 return -EIO;
1812 }
1813
1814 if (!isempty(buffer) && !streq(buffer, "-")) {
1815 i.argument = strdup(buffer);
1816 if (!i.argument)
1817 return log_oom();
1818 }
1819
1820 if (isempty(action)) {
1821 log_error("[%s:%u] Command too short '%s'.", fname, line, action);
1822 return -EINVAL;
1823 }
1824
1825 for (pos = 1; action[pos]; pos++) {
1826 if (action[pos] == '!' && !boot)
1827 boot = true;
1828 else if (action[pos] == '+' && !force)
1829 force = true;
1830 else {
1831 log_error("[%s:%u] Unknown modifiers in command '%s'",
1832 fname, line, action);
1833 return -EINVAL;
1834 }
1835 }
1836
1837 if (boot && !arg_boot) {
1838 log_debug("Ignoring entry %s \"%s\" because --boot is not specified.",
1839 action, path);
1840 return 0;
1841 }
1842
1843 i.type = action[0];
1844 i.force = force;
1845
1846 r = specifier_printf(path, specifier_table, NULL, &i.path);
1847 if (r < 0) {
1848 log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, path);
1849 return r;
1850 }
1851
1852 switch (i.type) {
1853
1854 case CREATE_DIRECTORY:
1855 case CREATE_SUBVOLUME:
1856 case CREATE_SUBVOLUME_INHERIT_QUOTA:
1857 case CREATE_SUBVOLUME_NEW_QUOTA:
1858 case TRUNCATE_DIRECTORY:
1859 case CREATE_FIFO:
1860 case IGNORE_PATH:
1861 case IGNORE_DIRECTORY_PATH:
1862 case REMOVE_PATH:
1863 case RECURSIVE_REMOVE_PATH:
1864 case ADJUST_MODE:
1865 case RELABEL_PATH:
1866 case RECURSIVE_RELABEL_PATH:
1867 if (i.argument)
1868 log_warning("[%s:%u] %c lines don't take argument fields, ignoring.", fname, line, i.type);
1869
1870 break;
1871
1872 case CREATE_FILE:
1873 case TRUNCATE_FILE:
1874 break;
1875
1876 case CREATE_SYMLINK:
1877 if (!i.argument) {
1878 i.argument = strappend("/usr/share/factory/", i.path);
1879 if (!i.argument)
1880 return log_oom();
1881 }
1882 break;
1883
1884 case WRITE_FILE:
1885 if (!i.argument) {
1886 log_error("[%s:%u] Write file requires argument.", fname, line);
1887 return -EBADMSG;
1888 }
1889 break;
1890
1891 case COPY_FILES:
1892 if (!i.argument) {
1893 i.argument = strappend("/usr/share/factory/", i.path);
1894 if (!i.argument)
1895 return log_oom();
1896 } else if (!path_is_absolute(i.argument)) {
1897 log_error("[%s:%u] Source path is not absolute.", fname, line);
1898 return -EBADMSG;
1899 }
1900
1901 path_kill_slashes(i.argument);
1902 break;
1903
1904 case CREATE_CHAR_DEVICE:
1905 case CREATE_BLOCK_DEVICE: {
1906 unsigned major, minor;
1907
1908 if (!i.argument) {
1909 log_error("[%s:%u] Device file requires argument.", fname, line);
1910 return -EBADMSG;
1911 }
1912
1913 if (sscanf(i.argument, "%u:%u", &major, &minor) != 2) {
1914 log_error("[%s:%u] Can't parse device file major/minor '%s'.", fname, line, i.argument);
1915 return -EBADMSG;
1916 }
1917
1918 i.major_minor = makedev(major, minor);
1919 break;
1920 }
1921
1922 case SET_XATTR:
1923 case RECURSIVE_SET_XATTR:
1924 if (!i.argument) {
1925 log_error("[%s:%u] Set extended attribute requires argument.", fname, line);
1926 return -EBADMSG;
1927 }
1928 r = parse_xattrs_from_arg(&i);
1929 if (r < 0)
1930 return r;
1931 break;
1932
1933 case SET_ACL:
1934 case RECURSIVE_SET_ACL:
1935 if (!i.argument) {
1936 log_error("[%s:%u] Set ACLs requires argument.", fname, line);
1937 return -EBADMSG;
1938 }
1939 r = parse_acls_from_arg(&i);
1940 if (r < 0)
1941 return r;
1942 break;
1943
1944 case SET_ATTRIBUTE:
1945 case RECURSIVE_SET_ATTRIBUTE:
1946 if (!i.argument) {
1947 log_error("[%s:%u] Set file attribute requires argument.", fname, line);
1948 return -EBADMSG;
1949 }
1950 r = parse_attribute_from_arg(&i);
1951 if (r < 0)
1952 return r;
1953 break;
1954
1955 default:
1956 log_error("[%s:%u] Unknown command type '%c'.", fname, line, (char) i.type);
1957 return -EBADMSG;
1958 }
1959
1960 if (!path_is_absolute(i.path)) {
1961 log_error("[%s:%u] Path '%s' not absolute.", fname, line, i.path);
1962 return -EBADMSG;
1963 }
1964
1965 path_kill_slashes(i.path);
1966
1967 if (!should_include_path(i.path))
1968 return 0;
1969
1970 if (arg_root) {
1971 char *p;
1972
1973 p = prefix_root(arg_root, i.path);
1974 if (!p)
1975 return log_oom();
1976
1977 free(i.path);
1978 i.path = p;
1979 }
1980
1981 if (!isempty(user) && !streq(user, "-")) {
1982 const char *u = user;
1983
1984 r = get_user_creds(&u, &i.uid, NULL, NULL, NULL);
1985 if (r < 0) {
1986 log_error("[%s:%u] Unknown user '%s'.", fname, line, user);
1987 return r;
1988 }
1989
1990 i.uid_set = true;
1991 }
1992
1993 if (!isempty(group) && !streq(group, "-")) {
1994 const char *g = group;
1995
1996 r = get_group_creds(&g, &i.gid);
1997 if (r < 0) {
1998 log_error("[%s:%u] Unknown group '%s'.", fname, line, group);
1999 return r;
2000 }
2001
2002 i.gid_set = true;
2003 }
2004
2005 if (!isempty(mode) && !streq(mode, "-")) {
2006 const char *mm = mode;
2007 unsigned m;
2008
2009 if (*mm == '~') {
2010 i.mask_perms = true;
2011 mm++;
2012 }
2013
2014 if (parse_mode(mm, &m) < 0) {
2015 log_error("[%s:%u] Invalid mode '%s'.", fname, line, mode);
2016 return -EBADMSG;
2017 }
2018
2019 i.mode = m;
2020 i.mode_set = true;
2021 } else
2022 i.mode = IN_SET(i.type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA) ? 0755 : 0644;
2023
2024 if (!isempty(age) && !streq(age, "-")) {
2025 const char *a = age;
2026
2027 if (*a == '~') {
2028 i.keep_first_level = true;
2029 a++;
2030 }
2031
2032 if (parse_sec(a, &i.age) < 0) {
2033 log_error("[%s:%u] Invalid age '%s'.", fname, line, age);
2034 return -EBADMSG;
2035 }
2036
2037 i.age_set = true;
2038 }
2039
2040 h = needs_glob(i.type) ? globs : items;
2041
2042 existing = ordered_hashmap_get(h, i.path);
2043 if (existing) {
2044 unsigned n;
2045
2046 for (n = 0; n < existing->count; n++) {
2047 if (!item_compatible(existing->items + n, &i)) {
2048 log_warning("[%s:%u] Duplicate line for path \"%s\", ignoring.",
2049 fname, line, i.path);
2050 return 0;
2051 }
2052 }
2053 } else {
2054 existing = new0(ItemArray, 1);
2055 r = ordered_hashmap_put(h, i.path, existing);
2056 if (r < 0)
2057 return log_oom();
2058 }
2059
2060 if (!GREEDY_REALLOC(existing->items, existing->size, existing->count + 1))
2061 return log_oom();
2062
2063 memcpy(existing->items + existing->count++, &i, sizeof(i));
2064
2065 /* Sort item array, to enforce stable ordering of application */
2066 qsort_safe(existing->items, existing->count, sizeof(Item), item_compare);
2067
2068 zero(i);
2069 return 0;
2070 }
2071
2072 static void help(void) {
2073 printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
2074 "Creates, deletes and cleans up volatile and temporary files and directories.\n\n"
2075 " -h --help Show this help\n"
2076 " --version Show package version\n"
2077 " --create Create marked files/directories\n"
2078 " --clean Clean up marked directories\n"
2079 " --remove Remove marked files/directories\n"
2080 " --boot Execute actions only safe at boot\n"
2081 " --prefix=PATH Only apply rules with the specified prefix\n"
2082 " --exclude-prefix=PATH Ignore rules with the specified prefix\n"
2083 " --root=PATH Operate on an alternate filesystem root\n",
2084 program_invocation_short_name);
2085 }
2086
2087 static int parse_argv(int argc, char *argv[]) {
2088
2089 enum {
2090 ARG_VERSION = 0x100,
2091 ARG_CREATE,
2092 ARG_CLEAN,
2093 ARG_REMOVE,
2094 ARG_BOOT,
2095 ARG_PREFIX,
2096 ARG_EXCLUDE_PREFIX,
2097 ARG_ROOT,
2098 };
2099
2100 static const struct option options[] = {
2101 { "help", no_argument, NULL, 'h' },
2102 { "version", no_argument, NULL, ARG_VERSION },
2103 { "create", no_argument, NULL, ARG_CREATE },
2104 { "clean", no_argument, NULL, ARG_CLEAN },
2105 { "remove", no_argument, NULL, ARG_REMOVE },
2106 { "boot", no_argument, NULL, ARG_BOOT },
2107 { "prefix", required_argument, NULL, ARG_PREFIX },
2108 { "exclude-prefix", required_argument, NULL, ARG_EXCLUDE_PREFIX },
2109 { "root", required_argument, NULL, ARG_ROOT },
2110 {}
2111 };
2112
2113 int c, r;
2114
2115 assert(argc >= 0);
2116 assert(argv);
2117
2118 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
2119
2120 switch (c) {
2121
2122 case 'h':
2123 help();
2124 return 0;
2125
2126 case ARG_VERSION:
2127 return version();
2128
2129 case ARG_CREATE:
2130 arg_create = true;
2131 break;
2132
2133 case ARG_CLEAN:
2134 arg_clean = true;
2135 break;
2136
2137 case ARG_REMOVE:
2138 arg_remove = true;
2139 break;
2140
2141 case ARG_BOOT:
2142 arg_boot = true;
2143 break;
2144
2145 case ARG_PREFIX:
2146 if (strv_push(&arg_include_prefixes, optarg) < 0)
2147 return log_oom();
2148 break;
2149
2150 case ARG_EXCLUDE_PREFIX:
2151 if (strv_push(&arg_exclude_prefixes, optarg) < 0)
2152 return log_oom();
2153 break;
2154
2155 case ARG_ROOT:
2156 r = parse_path_argument_and_warn(optarg, true, &arg_root);
2157 if (r < 0)
2158 return r;
2159 break;
2160
2161 case '?':
2162 return -EINVAL;
2163
2164 default:
2165 assert_not_reached("Unhandled option");
2166 }
2167
2168 if (!arg_clean && !arg_create && !arg_remove) {
2169 log_error("You need to specify at least one of --clean, --create or --remove.");
2170 return -EINVAL;
2171 }
2172
2173 return 1;
2174 }
2175
2176 static int read_config_file(const char *fn, bool ignore_enoent) {
2177 _cleanup_fclose_ FILE *f = NULL;
2178 char line[LINE_MAX];
2179 Iterator iterator;
2180 unsigned v = 0;
2181 Item *i;
2182 int r;
2183
2184 assert(fn);
2185
2186 r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &f);
2187 if (r < 0) {
2188 if (ignore_enoent && r == -ENOENT) {
2189 log_debug_errno(r, "Failed to open \"%s\": %m", fn);
2190 return 0;
2191 }
2192
2193 return log_error_errno(r, "Failed to open '%s', ignoring: %m", fn);
2194 }
2195 log_debug("Reading config file \"%s\".", fn);
2196
2197 FOREACH_LINE(line, f, break) {
2198 char *l;
2199 int k;
2200
2201 v++;
2202
2203 l = strstrip(line);
2204 if (*l == '#' || *l == 0)
2205 continue;
2206
2207 k = parse_line(fn, v, l);
2208 if (k < 0 && r == 0)
2209 r = k;
2210 }
2211
2212 /* we have to determine age parameter for each entry of type X */
2213 ORDERED_HASHMAP_FOREACH(i, globs, iterator) {
2214 Iterator iter;
2215 Item *j, *candidate_item = NULL;
2216
2217 if (i->type != IGNORE_DIRECTORY_PATH)
2218 continue;
2219
2220 ORDERED_HASHMAP_FOREACH(j, items, iter) {
2221 if (!IN_SET(j->type, CREATE_DIRECTORY, TRUNCATE_DIRECTORY, CREATE_SUBVOLUME, CREATE_SUBVOLUME_INHERIT_QUOTA, CREATE_SUBVOLUME_NEW_QUOTA))
2222 continue;
2223
2224 if (path_equal(j->path, i->path)) {
2225 candidate_item = j;
2226 break;
2227 }
2228
2229 if ((!candidate_item && path_startswith(i->path, j->path)) ||
2230 (candidate_item && path_startswith(j->path, candidate_item->path) && (fnmatch(i->path, j->path, FNM_PATHNAME | FNM_PERIOD) == 0)))
2231 candidate_item = j;
2232 }
2233
2234 if (candidate_item && candidate_item->age_set) {
2235 i->age = candidate_item->age;
2236 i->age_set = true;
2237 }
2238 }
2239
2240 if (ferror(f)) {
2241 log_error_errno(errno, "Failed to read from file %s: %m", fn);
2242 if (r == 0)
2243 r = -EIO;
2244 }
2245
2246 return r;
2247 }
2248
2249 int main(int argc, char *argv[]) {
2250 int r, k;
2251 ItemArray *a;
2252 Iterator iterator;
2253
2254 r = parse_argv(argc, argv);
2255 if (r <= 0)
2256 goto finish;
2257
2258 log_set_target(LOG_TARGET_AUTO);
2259 log_parse_environment();
2260 log_open();
2261
2262 umask(0022);
2263
2264 mac_selinux_init(NULL);
2265
2266 items = ordered_hashmap_new(&string_hash_ops);
2267 globs = ordered_hashmap_new(&string_hash_ops);
2268
2269 if (!items || !globs) {
2270 r = log_oom();
2271 goto finish;
2272 }
2273
2274 r = 0;
2275
2276 if (optind < argc) {
2277 int j;
2278
2279 for (j = optind; j < argc; j++) {
2280 k = read_config_file(argv[j], false);
2281 if (k < 0 && r == 0)
2282 r = k;
2283 }
2284
2285 } else {
2286 _cleanup_strv_free_ char **files = NULL;
2287 char **f;
2288
2289 r = conf_files_list_nulstr(&files, ".conf", arg_root, conf_file_dirs);
2290 if (r < 0) {
2291 log_error_errno(r, "Failed to enumerate tmpfiles.d files: %m");
2292 goto finish;
2293 }
2294
2295 STRV_FOREACH(f, files) {
2296 k = read_config_file(*f, true);
2297 if (k < 0 && r == 0)
2298 r = k;
2299 }
2300 }
2301
2302 /* The non-globbing ones usually create things, hence we apply
2303 * them first */
2304 ORDERED_HASHMAP_FOREACH(a, items, iterator) {
2305 k = process_item_array(a);
2306 if (k < 0 && r == 0)
2307 r = k;
2308 }
2309
2310 /* The globbing ones usually alter things, hence we apply them
2311 * second. */
2312 ORDERED_HASHMAP_FOREACH(a, globs, iterator) {
2313 k = process_item_array(a);
2314 if (k < 0 && r == 0)
2315 r = k;
2316 }
2317
2318 finish:
2319 while ((a = ordered_hashmap_steal_first(items)))
2320 item_array_free(a);
2321
2322 while ((a = ordered_hashmap_steal_first(globs)))
2323 item_array_free(a);
2324
2325 ordered_hashmap_free(items);
2326 ordered_hashmap_free(globs);
2327
2328 free(arg_include_prefixes);
2329 free(arg_exclude_prefixes);
2330 free(arg_root);
2331
2332 set_free_free(unix_sockets);
2333
2334 mac_selinux_finish();
2335
2336 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
2337 }
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